Alexey Kachalov
@alexeyunione.bsky.social
🚀 CTO & Co-founder https://unione.io/:
1000+ clients, no VC, global #startup by the team of 4 🎯
20+ years crafting #code & #business
1000+ clients, no VC, global #startup by the team of 4 🎯
20+ years crafting #code & #business
The best transactional email is still the one that delivers instantly.
Fancy design is optional. Speed is not.
Or would you prefer a good-looking email instead of a timely received one? 🙃
Fancy design is optional. Speed is not.
Or would you prefer a good-looking email instead of a timely received one? 🙃
November 25, 2025 at 4:29 PM
The best transactional email is still the one that delivers instantly.
Fancy design is optional. Speed is not.
Or would you prefer a good-looking email instead of a timely received one? 🙃
Fancy design is optional. Speed is not.
Or would you prefer a good-looking email instead of a timely received one? 🙃
The quickest deliverability win: remove 20% of your list.
That bottom segment is chronically inactive and quietly killing your reputation.
Be honest: when was the last time you cleaned your list? 😏
That bottom segment is chronically inactive and quietly killing your reputation.
Be honest: when was the last time you cleaned your list? 😏
November 24, 2025 at 4:48 PM
The quickest deliverability win: remove 20% of your list.
That bottom segment is chronically inactive and quietly killing your reputation.
Be honest: when was the last time you cleaned your list? 😏
That bottom segment is chronically inactive and quietly killing your reputation.
Be honest: when was the last time you cleaned your list? 😏
Your emails aren’t "mysteriously" going to spam.
You’re just skipping the basics: authentication, warmup, consistency.
When was the last time you found a critical email in your spam folder?
You’re just skipping the basics: authentication, warmup, consistency.
When was the last time you found a critical email in your spam folder?
November 20, 2025 at 4:59 PM
Your emails aren’t "mysteriously" going to spam.
You’re just skipping the basics: authentication, warmup, consistency.
When was the last time you found a critical email in your spam folder?
You’re just skipping the basics: authentication, warmup, consistency.
When was the last time you found a critical email in your spam folder?
Funny how people still say email is dead.
Meanwhile, smart founders quietly sell to customers while paying 10–20 times less than on social media.
Curious who still believes ads beat email in 2025?
Meanwhile, smart founders quietly sell to customers while paying 10–20 times less than on social media.
Curious who still believes ads beat email in 2025?
November 19, 2025 at 5:24 PM
Funny how people still say email is dead.
Meanwhile, smart founders quietly sell to customers while paying 10–20 times less than on social media.
Curious who still believes ads beat email in 2025?
Meanwhile, smart founders quietly sell to customers while paying 10–20 times less than on social media.
Curious who still believes ads beat email in 2025?
Email hack for startup growth:
Users who stop opening transactional emails usually stop paying next.
Deliverability data can predict revenue decline weeks ahead.
Users who stop opening transactional emails usually stop paying next.
Deliverability data can predict revenue decline weeks ahead.
November 18, 2025 at 6:12 PM
Email hack for startup growth:
Users who stop opening transactional emails usually stop paying next.
Deliverability data can predict revenue decline weeks ahead.
Users who stop opening transactional emails usually stop paying next.
Deliverability data can predict revenue decline weeks ahead.
Startups often panic when their emails go to spam and immediately switch ESPs.
Guess what? The bad reputation follows your domain, not your provider.
It’s like changing your car while keeping the same license plate.
Guess what? The bad reputation follows your domain, not your provider.
It’s like changing your car while keeping the same license plate.
November 17, 2025 at 4:57 PM
Startups often panic when their emails go to spam and immediately switch ESPs.
Guess what? The bad reputation follows your domain, not your provider.
It’s like changing your car while keeping the same license plate.
Guess what? The bad reputation follows your domain, not your provider.
It’s like changing your car while keeping the same license plate.
Email hack for your startup growth:
Never use noreply@ for onboarding.
Replies improve domain reputation, and silence kills it.
#email #startup #StartupGrowth #growth #business #SaaS #emailmarketing
Never use noreply@ for onboarding.
Replies improve domain reputation, and silence kills it.
#email #startup #StartupGrowth #growth #business #SaaS #emailmarketing
November 11, 2025 at 4:05 PM
Email hack for your startup growth:
Never use noreply@ for onboarding.
Replies improve domain reputation, and silence kills it.
#email #startup #StartupGrowth #growth #business #SaaS #emailmarketing
Never use noreply@ for onboarding.
Replies improve domain reputation, and silence kills it.
#email #startup #StartupGrowth #growth #business #SaaS #emailmarketing
Startup Growth Hack:
Most brands fail not because CAC is high, but because LTV is too low.
You can’t grow if customers buy once and disappear.
Retention always beats re-acquisition.
#startup #founder #SaaS #GrowthMindset #growthstrategy #StartupGrowth
Most brands fail not because CAC is high, but because LTV is too low.
You can’t grow if customers buy once and disappear.
Retention always beats re-acquisition.
#startup #founder #SaaS #GrowthMindset #growthstrategy #StartupGrowth
November 10, 2025 at 1:45 PM
Startup Growth Hack:
Most brands fail not because CAC is high, but because LTV is too low.
You can’t grow if customers buy once and disappear.
Retention always beats re-acquisition.
#startup #founder #SaaS #GrowthMindset #growthstrategy #StartupGrowth
Most brands fail not because CAC is high, but because LTV is too low.
You can’t grow if customers buy once and disappear.
Retention always beats re-acquisition.
#startup #founder #SaaS #GrowthMindset #growthstrategy #StartupGrowth
Don’t automate chaos.
If your funnel isn’t validated, automation will only speed up the wrong things.
First learn what actually converts, then scale it.
Insight from my interview "How to Build a Scalable E-commerce Tech Stack".
Find more hacks, the link in comments
If your funnel isn’t validated, automation will only speed up the wrong things.
First learn what actually converts, then scale it.
Insight from my interview "How to Build a Scalable E-commerce Tech Stack".
Find more hacks, the link in comments
November 6, 2025 at 4:39 PM
Don’t automate chaos.
If your funnel isn’t validated, automation will only speed up the wrong things.
First learn what actually converts, then scale it.
Insight from my interview "How to Build a Scalable E-commerce Tech Stack".
Find more hacks, the link in comments
If your funnel isn’t validated, automation will only speed up the wrong things.
First learn what actually converts, then scale it.
Insight from my interview "How to Build a Scalable E-commerce Tech Stack".
Find more hacks, the link in comments
#Email #Hacks:
Bounces from old corporate domains (like user@company.co) are churn signals.
Update those users via in-app alerts before they vanish from your reach.
#EmailDeliverability #SaaS #founder
Bounces from old corporate domains (like user@company.co) are churn signals.
Update those users via in-app alerts before they vanish from your reach.
#EmailDeliverability #SaaS #founder
November 5, 2025 at 4:53 PM
#Email #Hacks:
Bounces from old corporate domains (like user@company.co) are churn signals.
Update those users via in-app alerts before they vanish from your reach.
#EmailDeliverability #SaaS #founder
Bounces from old corporate domains (like user@company.co) are churn signals.
Update those users via in-app alerts before they vanish from your reach.
#EmailDeliverability #SaaS #founder
Always test sign-up flow emails on Gmail, Outlook, and iCloud before launch.
You’d be shocked how often one of them silently throttles verification links.
#email #emailmarketing #Gmail #Outlook #emaildeliverability #SaaS #Startups #founder
You’d be shocked how often one of them silently throttles verification links.
#email #emailmarketing #Gmail #Outlook #emaildeliverability #SaaS #Startups #founder
November 3, 2025 at 11:01 AM
Always test sign-up flow emails on Gmail, Outlook, and iCloud before launch.
You’d be shocked how often one of them silently throttles verification links.
#email #emailmarketing #Gmail #Outlook #emaildeliverability #SaaS #Startups #founder
You’d be shocked how often one of them silently throttles verification links.
#email #emailmarketing #Gmail #Outlook #emaildeliverability #SaaS #Startups #founder
Insight from my interview "How to Build a Scalable E-commerce Tech Stack" - YouTube [27:17]
Duplicate customer data quietly eats your profit.
If your CRM, ESP, and loyalty tool don’t talk, you’ll pay 3x for the same user.
One person, one ID - that’s how you stop losing margin.
Link in comments:
Duplicate customer data quietly eats your profit.
If your CRM, ESP, and loyalty tool don’t talk, you’ll pay 3x for the same user.
One person, one ID - that’s how you stop losing margin.
Link in comments:
October 31, 2025 at 12:22 PM
Insight from my interview "How to Build a Scalable E-commerce Tech Stack" - YouTube [27:17]
Duplicate customer data quietly eats your profit.
If your CRM, ESP, and loyalty tool don’t talk, you’ll pay 3x for the same user.
One person, one ID - that’s how you stop losing margin.
Link in comments:
Duplicate customer data quietly eats your profit.
If your CRM, ESP, and loyalty tool don’t talk, you’ll pay 3x for the same user.
One person, one ID - that’s how you stop losing margin.
Link in comments:
Email deliverability logs can reveal user behavior before analytics do.
Falling open rates in onboarding emails often predict churn before it appears in product metrics.
#email #emaildeliverability #SaaS #founder #startup #CustomerExperience
Falling open rates in onboarding emails often predict churn before it appears in product metrics.
#email #emaildeliverability #SaaS #founder #startup #CustomerExperience
October 30, 2025 at 4:27 PM
Email deliverability logs can reveal user behavior before analytics do.
Falling open rates in onboarding emails often predict churn before it appears in product metrics.
#email #emaildeliverability #SaaS #founder #startup #CustomerExperience
Falling open rates in onboarding emails often predict churn before it appears in product metrics.
#email #emaildeliverability #SaaS #founder #startup #CustomerExperience
Your first stack doesn’t need to be fancy - it needs to work.
Shopify + analytics + a fast abandoned-cart trigger can tell you if your product even sells.
Everything else can wait.
Shopify + analytics + a fast abandoned-cart trigger can tell you if your product even sells.
Everything else can wait.
October 28, 2025 at 11:28 AM
Your first stack doesn’t need to be fancy - it needs to work.
Shopify + analytics + a fast abandoned-cart trigger can tell you if your product even sells.
Everything else can wait.
Shopify + analytics + a fast abandoned-cart trigger can tell you if your product even sells.
Everything else can wait.
Email deliverability can be a pricing feature.
If you can guarantee inbox placement and uptime SLAs, that’s worth more than unlimited sends.
#startup #email #emailmarketing #SaaS #founder
If you can guarantee inbox placement and uptime SLAs, that’s worth more than unlimited sends.
#startup #email #emailmarketing #SaaS #founder
October 27, 2025 at 11:54 AM
Email deliverability can be a pricing feature.
If you can guarantee inbox placement and uptime SLAs, that’s worth more than unlimited sends.
#startup #email #emailmarketing #SaaS #founder
If you can guarantee inbox placement and uptime SLAs, that’s worth more than unlimited sends.
#startup #email #emailmarketing #SaaS #founder
Most #Ecommerce teams over-engineer before they sell a single item. Early automation just scales wrong assumptions. Launch at a solid C+, get real data, and fix what doesn’t work.
October 24, 2025 at 6:09 PM
Most #Ecommerce teams over-engineer before they sell a single item. Early automation just scales wrong assumptions. Launch at a solid C+, get real data, and fix what doesn’t work.
Most “silent churn” happens when renewal reminders or usage reports hit spam.
Users don’t cancel - they just forget you exist.
#email #CustomerExperience #Churn #emailapi #spam
Users don’t cancel - they just forget you exist.
#email #CustomerExperience #Churn #emailapi #spam
October 22, 2025 at 7:24 AM
Most “silent churn” happens when renewal reminders or usage reports hit spam.
Users don’t cancel - they just forget you exist.
#email #CustomerExperience #Churn #emailapi #spam
Users don’t cancel - they just forget you exist.
#email #CustomerExperience #Churn #emailapi #spam
Your onboarding funnel depends on one thing: the verification email landing.
If Gmail delays or flags it, activation drops - not because of UX, but because users never see it.
#email #emailmarketing #SaaS #founder #Gmail #deliverability
If Gmail delays or flags it, activation drops - not because of UX, but because users never see it.
#email #emailmarketing #SaaS #founder #Gmail #deliverability
October 21, 2025 at 2:00 PM
Your onboarding funnel depends on one thing: the verification email landing.
If Gmail delays or flags it, activation drops - not because of UX, but because users never see it.
#email #emailmarketing #SaaS #founder #Gmail #deliverability
If Gmail delays or flags it, activation drops - not because of UX, but because users never see it.
#email #emailmarketing #SaaS #founder #Gmail #deliverability
We ship a small fix → customer thanks us → posts screenshot on LinkedIn.
That post brought 2 inbound leads.
No ad spend. Just a bug fix.
Marketing hides in engineering if you look closely.
#startup #SaaS #CustomerExperience
That post brought 2 inbound leads.
No ad spend. Just a bug fix.
Marketing hides in engineering if you look closely.
#startup #SaaS #CustomerExperience
October 20, 2025 at 2:16 PM
We ship a small fix → customer thanks us → posts screenshot on LinkedIn.
That post brought 2 inbound leads.
No ad spend. Just a bug fix.
Marketing hides in engineering if you look closely.
#startup #SaaS #CustomerExperience
That post brought 2 inbound leads.
No ad spend. Just a bug fix.
Marketing hides in engineering if you look closely.
#startup #SaaS #CustomerExperience
Why transactional emails matter.
Your SaaS first impression isn’t only the landing page.
It’s also the “Confirm your email” message.
If that lands in spam or looks sloppy, trust is gone.
Transactional emails are product experience.
#email #SaaS #founder #startup #emailmarketing
Your SaaS first impression isn’t only the landing page.
It’s also the “Confirm your email” message.
If that lands in spam or looks sloppy, trust is gone.
Transactional emails are product experience.
#email #SaaS #founder #startup #emailmarketing
October 16, 2025 at 3:56 PM
Why transactional emails matter.
Your SaaS first impression isn’t only the landing page.
It’s also the “Confirm your email” message.
If that lands in spam or looks sloppy, trust is gone.
Transactional emails are product experience.
#email #SaaS #founder #startup #emailmarketing
Your SaaS first impression isn’t only the landing page.
It’s also the “Confirm your email” message.
If that lands in spam or looks sloppy, trust is gone.
Transactional emails are product experience.
#email #SaaS #founder #startup #emailmarketing
Transactional emails are prime real estate and they get opened often.
You can use them to upsell: a banner, a small CTA.
But don't overload them with design, otherwise Gmail may dump you into Promotions.
You can use them to upsell: a banner, a small CTA.
But don't overload them with design, otherwise Gmail may dump you into Promotions.
October 15, 2025 at 4:17 PM
Transactional emails are prime real estate and they get opened often.
You can use them to upsell: a banner, a small CTA.
But don't overload them with design, otherwise Gmail may dump you into Promotions.
You can use them to upsell: a banner, a small CTA.
But don't overload them with design, otherwise Gmail may dump you into Promotions.
#Email hack for SaaS: when launching a new feature, don’t blast everyone at once.
Roll out announcements in small segments: it looks natural to ISPs and keeps deliverability healthy
#emailmarketing #SaaS #founders #emailapi
Roll out announcements in small segments: it looks natural to ISPs and keeps deliverability healthy
#emailmarketing #SaaS #founders #emailapi
October 14, 2025 at 12:08 PM
#Email hack for SaaS: when launching a new feature, don’t blast everyone at once.
Roll out announcements in small segments: it looks natural to ISPs and keeps deliverability healthy
#emailmarketing #SaaS #founders #emailapi
Roll out announcements in small segments: it looks natural to ISPs and keeps deliverability healthy
#emailmarketing #SaaS #founders #emailapi
The dirtiest secret in email: inactive recipients influence your sender score.
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup
October 13, 2025 at 3:21 PM
The dirtiest secret in email: inactive recipients influence your sender score.
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup
The dirtiest secret in email: inactive recipients influence your sender score.
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup
October 9, 2025 at 1:08 PM
The dirtiest secret in email: inactive recipients influence your sender score.
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup
Stop sending to people who haven’t opened in 180 days: they’re killing your deliverability.
#email #emailmarketing #SaaS #startup