BYOMailer vs Klaviyo
Since February 2025, Klaviyo charges for ALL active profiles, not just the ones you actually send to. At 50K profiles that's $720/mo. BYOMailer + SES? $119.
How many contacts do you have?
25,000
Klaviyo Email
per month
$400
$4,800/yr
BYOMailer Founder
$49 plan + $10 SES
$59
$708/yr
You save
$341/mo
That's $4,092/yr back in your pocket. (85% less)
At 100K profiles, Klaviyo charges $1,440/mo. How many of those profiles actually get emails from you? With BYOMailer, you only pay for what you send.
Klaviyo uses shared IPs for all senders. One bad actor tanks everyone's deliverability. With your own SES account, your reputation is entirely yours.
Klaviyo caps you at 10x your profile count. At 100K profiles that's 1M emails/mo. Sounds like a lot until you're running multiple campaigns a week. SES has no monthly limit.
Klaviyo's pricing jumps are brutal. $150 at 10K, $350 at 15K, $1,440 at 100K. BYOMailer is a flat plan fee plus pennies per thousand emails. You always know what you're paying.
BYOMailer connects to your own Amazon SES account. You get SES deliverability and pricing with a proper marketing UI on top.
Charges for ALL active profiles since Feb 2025, even ones you never email
Send limit is 10x your profile count (shrinks to ~7.5x at 150K+)
Price jumps are aggressive: $150 at 10K to $350 at 15K
SMS/MMS costs extra on top of the email plan
BYOMailer cost = flat plan fee + Amazon SES at $0.10/1,000 emails, assuming 4 emails per contact per month.
BYOMailer connects to your own Amazon SES account. You keep full control of your deliverability and stop paying the ESP tax.
Free to try. Send your first 25,000 emails before you subscribe.
If you're a SaaS or product team (not primarily ecommerce) and you want newsletters, sequences, and lifecycle automations on your own AWS SES with flat pricing, BYOMailer is worth a look. It makes sense when you don't need Klaviyo's deep ecommerce and revenue-attribution machinery and you'd rather own your sending infrastructure.
Don't switch to BYOMailer if you run ecommerce and lean on Shopify or WooCommerce integrations, revenue attribution, SMS and MMS, or product and event data deeply tied to your store. Klaviyo is the better tool there, and BYOMailer doesn't try to replace it.
Moving from Klaviyo to BYOMailer usually means exporting your profiles and contacts, preserving lists and segments where the export allows, recreating your core templates, rebuilding your most important flows as sequences, and connecting your AWS SES account. We help you make the move on every plan, not just the pricey ones.
We help you make the move on every plan, not just the pricey ones.
No, and we won't claim it is. Klaviyo is an ecommerce-focused platform with revenue attribution, deep store integrations, and SMS. BYOMailer replaces the newsletter and lifecycle-automation side, but it isn't a full Klaviyo replacement for ecommerce teams.
Usually Klaviyo is the better choice for Shopify stores. Its native integrations, product and event data, and revenue attribution are hard to beat. BYOMailer is a fit only if you don't need those ecommerce-native features.
Yes. BYOMailer handles newsletters, sequences, and lifecycle automations for SaaS and product teams. You'll rebuild your most important Klaviyo flows as sequences during migration, and we'll help.
BYOMailer doesn't replace Klaviyo's ecommerce analytics, Shopify and WooCommerce integrations, revenue attribution, SMS and MMS, or product and event data tied to a store. Those stay firmly in Klaviyo's corner.
A SaaS founder who doesn't need ecommerce analytics is paying for machinery they'll never touch. BYOMailer gives you newsletters and lifecycle automations on your own AWS SES with flat pricing, so your cost tracks sending volume rather than profile count.
Keep exploring
Create an account and connect your own AWS SES account in minutes.
Free to try. Send your first 25,000 emails before you subscribe.