diff --git a/go.mod b/go.mod
index f4fa88a..c596801 100644
--- a/go.mod
+++ b/go.mod
@@ -14,6 +14,7 @@ require (
 	github.com/dustin/go-humanize v1.0.0
 	github.com/elithrar/simple-scrypt v1.3.0
 	github.com/gabstv/merger v1.0.1
+	github.com/go-mail/mail v2.3.1+incompatible
 	github.com/goccy/go-yaml v1.8.6
 	github.com/gomarkdown/markdown v0.0.0-20201113031856-722100d81a8e
 	github.com/google/uuid v1.2.0 // indirect
diff --git a/go.sum b/go.sum
index 7408716..c65da8f 100644
--- a/go.sum
+++ b/go.sum
@@ -80,6 +80,8 @@ github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
+github.com/go-mail/mail v2.3.1+incompatible h1:UzNOn0k5lpfVtO31cK3hn6I4VEVGhe3lX8AJBAxXExM=
+github.com/go-mail/mail v2.3.1+incompatible/go.mod h1:VPWjmmNyRsWXQZHVHT3g0YbIINUkSmuKOiLIDkWbL6M=
 github.com/go-playground/assert/v2 v2.0.1/go.mod h1:VDjEfimB/XKnb+ZQfWdccd7VUvScMdVu0Titje2rxJ4=
 github.com/go-playground/locales v0.13.0/go.mod h1:taPMhCMXrRLJO55olJkUXHZBHCxTMfnGwq/HNwmWNS8=
 github.com/go-playground/universal-translator v0.17.0/go.mod h1:UkSxE5sNxxRwHyU+Scu5vgOQjsIJAF8j9muTVoKLVtA=
@@ -261,6 +263,7 @@ github.com/spf13/cobra v0.0.7/go.mod h1:/6GTrnGXV9HjY+aR4k0oJ5tcvakLuG6EuKReYlHN
 github.com/spf13/jwalterweatherman v1.0.0/go.mod h1:cQK4TGJAtQXfYWX+Ddv3mKDzgVb68N+wFjFa4jdeBTo=
 github.com/spf13/jwalterweatherman v1.1.0/go.mod h1:aNWZUN0dPAAO/Ljvb5BEdw96iTZ0EXowPYD95IqWIGo=
 github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
+github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
 github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/spf13/viper v1.4.0/go.mod h1:PTJ7Z/lr49W6bUbkmS1V3by4uWynFiR9p7+dSq/yZzE=
 github.com/spf13/viper v1.7.1/go.mod h1:8WkrPz2fc9jxqZNCJI/76HCieCp4Q8HaLFoCha5qpdg=
@@ -286,6 +289,7 @@ github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyC
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
 github.com/vcraescu/go-paginator v1.0.0 h1:ilNmRhlgG8N44LuxfGoPI2u8guXMA6gUqaPGA5BmRFs=
 github.com/vcraescu/go-paginator v1.0.0/go.mod h1:caZCjjt2qcA1O2aDzW7lwAcK4Rxw3LNvdEVF/ONxZWw=
+github.com/wblakecaldwell/profiler v0.0.0-20150908040756-6111ef1313a1 h1:Dz/PRieZRmOhDfOlkVpY1LYYIfNoTJjlDirAlagOr0s=
 github.com/wblakecaldwell/profiler v0.0.0-20150908040756-6111ef1313a1/go.mod h1:3+0F8oLB1rQlbIcRAuqDgGdzNi9X69un/aPz4cUAFV4=
 github.com/writeas/slug v1.2.0 h1:EMQ+cwLiOcA6EtFwUgyw3Ge18x9uflUnOnR6bp/J+/g=
 github.com/writeas/slug v1.2.0/go.mod h1:RE8shOqQP3YhsfsQe0L3RnuejfQ4Mk+JjY5YJQFubfQ=
diff --git a/internal/ttlcache.go b/internal/ttlcache.go
new file mode 100644
index 0000000..776d8ca
--- /dev/null
+++ b/internal/ttlcache.go
@@ -0,0 +1,73 @@
+package internal
+
+import (
+	"sync"
+	"time"
+)
+
+type CachedItem struct {
+	Value  int
+	Expiry time.Time
+}
+
+func (item CachedItem) Expired() bool {
+	return time.Now().After(item.Expiry)
+}
+
+type CachedItems map[string]CachedItem
+
+type TTLCache struct {
+	sync.RWMutex
+
+	ttl   time.Duration
+	items map[string]CachedItem
+}
+
+func (cache *TTLCache) Dec(k string) int {
+	return cache.Set(k, cache.Get(k)-1)
+}
+
+func (cache *TTLCache) Inc(k string) int {
+	return cache.Set(k, cache.Get(k)+1)
+}
+
+func (cache *TTLCache) Get(k string) int {
+	cache.RLock()
+	defer cache.RUnlock()
+	v, ok := cache.items[k]
+	if !ok {
+		return 0
+	}
+	return v.Value
+}
+
+func (cache *TTLCache) Set(k string, v int) int {
+	cache.Lock()
+	defer cache.Unlock()
+
+	cache.items[k] = CachedItem{v, time.Now().Add(cache.ttl)}
+
+	return v
+}
+
+func (cache *TTLCache) Reset(k string) int {
+	return cache.Set(k, 0)
+}
+
+func NewTTLCache(ttl time.Duration) *TTLCache {
+	cache := &TTLCache{ttl: ttl, items: make(CachedItems)}
+
+	go func() {
+		for range time.Tick(ttl) {
+			cache.Lock()
+			for k, v := range cache.items {
+				if v.Expired() {
+					delete(cache.items, k)
+				}
+			}
+			cache.Unlock()
+		}
+	}()
+
+	return cache
+}