Spark vs addy.io
Spark starts at $10/mo across 3 plans. addy.io starts at $1/mo across 5 plans.
Spark
Email Clients
From $10$8.25/moFree tier
addy.io
Email Clients
From $1$1/moFree tier
addy.io's cheapest paid plan costs $1/mo, $9 less than Spark at $10/mo. Both offer a free tier.